Welcome to the Advanced Encryption Algorithm MCQs Page

Dive deep into the fascinating world of Advanced Encryption Algorithm with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Advanced Encryption Algorithm, a crucial aspect of Cryptography and Network Security. In this section, you will encounter a diverse range of MCQs that cover various aspects of Advanced Encryption Algorithm, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Cryptography and Network Security.

Check out the MCQs below to embark on an enriching journey through Advanced Encryption Algorithm. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Cryptography and Network Security.

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Advanced Encryption Algorithm MCQs | Page 2 of 6

Explore more Topics under Cryptography and Network Security

01

Cryptography Basics

02

Encryption Techniques

03

Data Encryption Standard

04

Number Theory and Finite Fields

05

Pseudorandom Number Generation and Stream Ciphers

06

Public Key Cryptography and RSA

07

Cryptographic Hash Functions

08

Message Authentication Codes and Key Management

09

Network Security Concepts

10

Security in the Internet

11

Wireless Network Security

Q11.

Which of the 4 operations are false for each round in the AES algorithm ?

i) Substitute Bytes
ii) Shift Columns
iii) Mix Rows
iv) XOR Round Key

i) only

ii) iii) and iv)

ii) and iii)

only iv)

Discuss

Answer: (b).ii) iii) and iv)

Q12.

There is an addition of round key before the start of the AES round algorithms.

True

False

May be

Can't say

Discuss

Answer: (a).True

Q13.

The multiplicative inverse of 0x95 in AES where m(x)=x^8+x^4+x^3+x+1 is

0x8F

0xF8

0x8A

0xA8

Discuss

Answer: (c).0x8A

Q14.

How many computation rounds does the simplified AES consists of?

Discuss

Answer: (b).2

Q15.

For an inputs key of size 128 bits constituting of all zeros, what is w(7) ?

{62 63 63 63}

{62 62 62 62}

{00 00 00 00}

{63 63 63 62}

Discuss

Answer: (a).{62 63 63 63}

Q16.

On comparing AES with DES, which of the following functions from DES does not have an equivalent AES function?

f function

permutation p

swapping of halves

xor of subkey with function f

Discuss

Answer: (c).swapping of halves

Q17.

On perform the Mix Columns transformation for the sequence of bytes “77 89 AB CD” we get output

{01 55 EE 4A}

{0A 44 EF 4A}

{08 55 FF 3A}

{09 44 DD 4A}

Discuss

Answer: (c).{08 55 FF 3A}

Q18.

n perform the Mix Columns transformation for the sequence of bytes “67 89 AB CD” we get output

{08 55 FF 18}

{28 45 EF 08}

{28 45 FF 18}

{25 35 EF 08}

Discuss

Answer: (b).{28 45 EF 08}

Q19.

Is the following matrix the inverse matrix of the matrix used in the mix columns step?

x3 + 1 x
x x3 + 1

Yes

Can’t say

Insufficient Information

Discuss

Answer: (a).Yes

Q20.

For the cipher text 0000 0111 0011 1000 and Key 0110 1111 0110 1011, apply the Simplified AES to obtain the plaintext. The plain text is

0110 1001 0111 0001

0110 1111 0110 1011

0010 1001 0110 1011

1111 0101 0111 1111

Discuss

Answer: (b).0110 1111 0110 1011

Page 2 of 6

Welcome to the Advanced Encryption Algorithm MCQs Page

Advanced Encryption Algorithm MCQs | Page 2 of 6

Explore more Topics under Cryptography and Network Security

Cryptography Basics

Encryption Techniques

Data Encryption Standard

Number Theory and Finite Fields

Pseudorandom Number Generation and Stream Ciphers

Public Key Cryptography and RSA

Cryptographic Hash Functions

Message Authentication Codes and Key Management

Network Security Concepts

Security in the Internet

Wireless Network Security

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